IMO the form of the interior doesn't need to change. But the material representation of this car tend toward machined steel or stainless steel wrapped in leather. Now we can't have these materials obviously but we could have good representations of them. The idea would be to set what spartan detail there is off in a profound way. And bring back detail like the way the seat belt plugged into the console on the 69. utilitarian details like this are the caracter of the car.